Yes, if we dabble into a territory too large for us, it's good to set up a camp so there's no risk to wander around aimlessly. Been there done that way too many times, specially as a gamedev hobbyist.

"RPG Platformer - what if I add that... which leads to that... and oh my god this would be so cool... gonna make it online... with a brand new dungeon system design for a mmo with instanced 8-player quests... yes... no wait. Nvm, too big for me, project dead."